我有一个表格，我在Textfield中显示用户现有数据，并且还有一个个人资料图片上传选项。因此，如果我编辑文本框中的某些字段，然后使用imagePicker上传图像，则数据会重置并显示旧值。我不知道如何解决这个问题
我的代码是： -
class ProfileVC: UIViewController, TopViewDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate,UITextFieldDelegate {
@IBOutlet weak var topView: WATopView!
@IBOutlet weak var firstName: WATextField!
@IBOutlet weak var lastName: WATextField!
@IBOutlet weak var email: WATextField!
// @IBOutlet weak var password: WATextField!
@IBOutlet weak var university: WATextField!
@IBOutlet weak var graduationDate: WATextField!
@IBOutlet weak var major: WATextField!
@IBOutlet weak var homeTown: WATextField!
@IBOutlet weak var industry: WATextField!
@IBOutlet var profileImageView: WAImageView!
@IBOutlet weak var imagePickerButton:WAButton!
var pickerView = UIPickerView()
var uniList = [University]()
var industryList = [Industry]()
var selectedIndustry: Industry?
var selectedUni: University?
let imagePicker = UIImagePickerController()
var base64StringOf_my_image = String()
var prepCompressedImage: UIImage!
var isDismissing: Bool = false
let currentUser = User.getCurrentUser()
var inputViews = UIView()
let datePickerView = UIDatePicker()
let profileLoader = ProfileLoader()
override func viewDidLoad() {
super.viewDidLoad()
if fireNotification.pickedImage != nil {
profileImageView.image = fireNotification.pickedImage!.circle
self.prepCompressedImage = UIImage.compressImage(fireNotification.pickedImage, compressRatio: 0.9)
base64StringOf_my_image = appUtility.base64StringOfImage(self.prepCompressedImage)
fireNotification.pickedImage = nil
}else {
profileImageView.sd_setImageWithURL(NSURL(string: currentUser!.userImageURL), placeholderImage: UIImage(named:"no-image"))
self.prepCompressedImage = UIImage.compressImage(profileImageView.image, compressRatio: 0.9)
base64StringOf_my_image = appUtility.base64StringOfImage(self.prepCompressedImage)
}
pickerView.delegate = self
pickerView.dataSource = self
loadIndAndUni()
topView.delegate = self
disableEditing(false)
if !(currentUser?.firstName.isEmpty)! {
firstName.text = currentUser?.firstName
}
if !(currentUser?.lastName.isEmpty)! {
lastName.text = currentUser?.lastName
}
if !(currentUser?.email.isEmpty)! {
email.text = currentUser?.email
}
if !(currentUser?.uni_name.isEmpty)! {
university.text = currentUser?.uni_name
}
if !(currentUser?.startGradDate.isEmpty)! {
graduationDate.text = currentUser?.startGradDate
}
if !(currentUser?.major.isEmpty)! {
major.text = currentUser?.major
}
if !(currentUser?.homeTown.isEmpty)! {
homeTown.text = currentUser?.homeTown
}
if !(currentUser?.ind_name.isEmpty)! {
industry.text = currentUser?.ind_name
}
imagePickerButton.userInteractionEnabled = false
}
func loadIndAndUni(){
if fireNotification.uniList != nil {
uniList = fireNotification.uniList!
}else { self.loadUni()}
if fireNotification.indList != nil {
industryList = fireNotification.indList!
}else {self.loadIndustries()}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func editDoneButtonAction(sender: UIButton) {
if sender.titleLabel?.text == "Edit" {
topView.doneText = "Done"
// PrepUtility.showAlertWithTitle("Edit", error: "You are going to submit data", OKButton: "Edit", VC: self)
imagePickerButton.userInteractionEnabled = true
disableEditing(true)
}
if sender.titleLabel?.text == "Done" {
// PrepUtility.showAlertWithTitle("Done", error: "You are going to submit data", OKButton: "Done", VC: self)
submitRequest()
topView.doneText = "Edit"
disableEditing(false)
}
}
func submitRequest(){
let (isValid , error) = validateFields()
if !isValid {
appUtility.showAlert(error!,VC: self)
return
}
if (base64StringOf_my_image.isEmpty) {
appUtility.showAlert("Please Select Image",VC: self)
return
}
if PrepUtility.connectedToNetwork() {
appUtility.loadingView(self, isHide: false)
if selectedUni != nil {
let indText = industry.text
var selectedI: Industry?
for t in industryList {
if t.ind_name == indText {
selectedI = t
}
}
let params = ["std_id":currentUser!.std_id,"std_f_name":firstName.text!,"std_l_name":lastName.text!,"std_grad_date":graduationDate.text!,"std_hometown":homeTown.text!,"std_major":major.text!,"uni_id":selectedUni!.uni_id,"std_img":["content_type": "image/png", "filename":"test.png", "file_data": base64StringOf_my_image],"ind_id":selectedI!.ind_id]
editProfile(params)
}else {
let uniText = university.text
var selectedU: University?
for t in uniList {
if t.uni_name == uniText {
selectedU = t
}
}
let indText = industry.text
var selectedI: Industry?
for t in industryList {
if t.ind_name == indText {
selectedI = t
}
}
if selectedU!.uni_id.boolValue {
let params = ["std_id":currentUser!.std_id,"std_f_name":firstName.text!,"std_l_name":lastName.text!,"std_grad_date":graduationDate.text!,"std_hometown":homeTown.text!,"std_major":major.text!,"uni_id":selectedU!.uni_id,"std_img":["content_type": "image/png", "filename":"test.png", "file_data": base64StringOf_my_image],"ind_id":selectedI!.ind_id]
editProfile(params)
}
}
}else {
appUtility.loadingView(self, isHide: true)
appUtility.showNoNetworkAlert()
}
}
func editProfile(params:[String:AnyObject]) {
profileLoader.tryStudentProfileEdit(params, successBlock: { (user) in
appUtility.loadingView(self, isHide: true)
}, failureBlock: { (error) in
// appUtility.showAlert((error?.userInfo["NSLocalizedDescription"])! as! String, VC: self)
if let err = error?.userInfo["NSLocalizedDescription"] {
appUtility.showAlert(err as! String, VC: self)
appUtility.loadingView(self, isHide: true)
}else {
appUtility.loadingView(self, isHide: true)
appUtility.showAlert("Something went wrong", VC: self)
}
})
}
func openMenu() {
firstName.resignFirstResponder()
lastName.resignFirstResponder()
// email.resignFirstResponder()
// password.resignFirstResponder()
university.resignFirstResponder()
graduationDate.resignFirstResponder()
major.resignFirstResponder()
homeTown.resignFirstResponder()
industry.resignFirstResponder()
self.mainSlideMenu().openLeftMenu()
}
//MARK:- Private Methods
private func validateFields() -> (Bool , String?) {
if !firstName.isValid() {
hideView()
return (false , "Please enter your First Name")
}
if !lastName.isValid() {
hideView()
return (false , "Please enter your Last Name")
}
// if !email.isValid() {
// hideView()
// return (false , "Please enter email")
// }
//
// if email.isValid() {
// hideView()
// let text = email.text
// if !(text!.hasSuffix(".edu")) {
// return (false , "Please enter email that having .edu")
// }
// if !email.text!.isValidEmail() {
// return (false , "Please Enter a valid email...")
// }
// }
if !university.isValid() {
hideView()
// return (false , "Please select University")
}
if !homeTown.isValid() {
hideView()
// return (false , "Please enter address")
}
// if !password.isValid() {
// return (false , "Please enter password")
// }
//
return (true , nil)
}
private func showGradDatePicker() {
//Create the view
graduationDate.inputView = inputViews
inputViews = UIView(frame: CGRectMake(0, self.view.frame.height, self.view.frame.width, 240))
inputViews.backgroundColor = UIColor.whiteColor()
let datePickerView : UIDatePicker = UIDatePicker(frame: CGRectMake(0, 40, 0, 0))
datePickerView.datePickerMode = UIDatePickerMode.Date
inputViews.addSubview(datePickerView) // add date picker to UIView
let doneButton = UIButton(frame: CGRectMake((self.view.frame.size.width/2) - (100/2), 0, 100, 50))
doneButton.setTitle("Done", forState: UIControlState.Normal)
doneButton.setTitle("Done", forState: UIControlState.Highlighted)
doneButton.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
doneButton.setTitleColor(UIColor.grayColor(), forState: UIControlState.Highlighted)
inputViews.addSubview(doneButton) // add Button to UIView
doneButton.addTarget(self, action: #selector(ScheduleVC.doneButton(_:)), forControlEvents: UIControlEvents.TouchUpInside) // set button click event
// sender.inputView = inputView
datePickerView.addTarget(self, action: #selector(ScheduleVC.datePickerValueChanged(_:)), forControlEvents: UIControlEvents.ValueChanged)
self.view.addSubview(inputViews)
datePickerValueChanged(datePickerView) // Set the date on start.
UIView.animateWithDuration(0.5) {
self.inputViews.frame = CGRect(x: 0, y: self.view.frame.height - 270, width: self.view.frame.width, height: 240)
}
}
func doneButton(sender:UIButton) {
hideView()
}
func hideView() {
UIView.animateWithDuration(0.9) {
self.inputViews.frame = CGRect(x: 0, y:0, width: self.view.frame.width, height: 240)
self.inputViews.removeFromSuperview()
}
}
func datePickerValueChanged(sender:UIDatePicker) {
// isDateSet = true
let dateFormatter = NSDateFormatter()
// dateFormatter.dateStyle = NSDateFormatterStyle.ShortStyle
dateFormatter.dateFormat = "yyyy-MM-dd"
// dateFormatter.timeStyle = NSDateFormatterStyle.ShortStyle
graduationDate.text = dateFormatter.stringFromDate(sender.date)
}
func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
if textField == university {
self.resignFirstResponder(university)
industry.tag = 1
university.tag = 0
graduationDate.tag = 1
pickerViewToolBar(textField)
}
if textField == industry {
self.resignFirstResponder(industry)
industry.tag = 0
university.tag = 1
graduationDate.tag = 1
pickerViewToolBar(textField)
}
if textField == graduationDate{
industry.tag = 1
university.tag = 1
graduationDate.tag = 0
self.resignFirstResponder(graduationDate)
showGradDatePicker()
}
return true
}
private func disableEditing(boo: Bool) {
firstName.enabled = boo
lastName.enabled = boo
// email.enabled = boo
// password.enabled = boo
university.enabled = boo
graduationDate.enabled = boo
major.enabled = boo
homeTown.enabled = boo
industry.enabled = boo
}
private func resignFirstResponder(textField:UITextField) {
if textField != firstName {
// hideView()
textField.resignFirstResponder()
}
if textField != lastName {
// hideView()
textField.resignFirstResponder()
}
// if textField != email{
//// hideView()
// textField.resignFirstResponder()
// }
// if textField != password {
//// hideView()
// textField.resignFirstResponder()
// }
if textField != university {
// hideView()
textField.resignFirstResponder()
}
if textField != graduationDate {
textField.resignFirstResponder()
}
if textField != major {
// hideView()
textField.resignFirstResponder()
}
if textField != homeTown {
// hideView()
textField.resignFirstResponder()
}
if textField != industry {
// hideView()
textField.resignFirstResponder()
}
}
private func resignAllTextFields() {
firstName.resignFirstResponder()
}
//MARK:- Public Methods
func pickerViewToolBar(sender: UITextField) {
var doneButton:UIBarButtonItem?
if university.tag == 0 {
university.inputView = pickerView
}
if industry.tag == 0 {
industry.inputView = pickerView
}
if graduationDate.tag == 0 {
graduationDate.inputView = pickerView
}
// departureDatePickerView.datePickerMode = UIDatePickerMode.Date
// Sets up the "button"
// Creates the toolbar
let toolBar = UIToolbar()
toolBar.barStyle = .Default
toolBar.translucent = true
toolBar.tintColor = UIColor(red: 92/255, green: 216/255, blue: 255/255, alpha: 1)
toolBar.sizeToFit()
// Adds the buttons
if(sender.tag == 0){
// self.nextButton?.hidden = true
doneButton = UIBarButtonItem(title: "Done", style: .Plain, target: self, action: #selector(PrepInfoVC.doneClick(_:)))
doneButton!.tag = 0
}
// else if(sender.tag == 2){
//// self.nextButton?.hidden = true
// doneButton = UIBarButtonItem(title: "Done", style: .Plain, target: self, action: #selector(PrepInfoVC.doneClick(_:)))
// doneButton!.tag = 2
// }
let spaceButton = UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: nil, action: nil)
let cancelButton = UIBarButtonItem(title: "Cancel", style: .Plain, target: self, action: #selector(PrepInfoVC.cancelClick))
toolBar.setItems([cancelButton, spaceButton, doneButton!], animated: false)
toolBar.userInteractionEnabled = true
// Adds the toolbar to the view
if university.tag == 0 {
university.inputAccessoryView = toolBar
}
if industry.tag == 0 {
industry.inputAccessoryView = toolBar
}
if graduationDate.tag == 0 {
graduationDate.inputAccessoryView = toolBar
}
}
func doneClick(sender:UIBarButtonItem) {
if industry.tag == 0 {
selectedIndustry = industryList[pickerView.selectedRowInComponent(0)]
industry.text = selectedIndustry!.ind_name
industry.tag = 1
industry.resignFirstResponder()
}else{
selectedUni = uniList[pickerView.selectedRowInComponent(0)]
university.text = selectedUni!.uni_name
university.tag = 1
university.resignFirstResponder()
}
}
func cancelClick() {
if industry.tag == 0 {
industry.tag = 1
industry.resignFirstResponder()
}else {
university.tag = 1
university.resignFirstResponder()
}
}
//MARK:- ImagePicker
@IBAction func loadImageButtonTapped(sender: UIButton) {
imagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
imagePicker.allowsEditing = true
imagePicker.delegate = self
self.hidesBottomBarWhenPushed = true
self.navigationController?.presentViewController(imagePicker, animated: true, completion: nil)
self.hidesBottomBarWhenPushed = false
}
// MARK: - UIImagePickerControllerDelegate Methods
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
print(info)
if let pickedImage = info[UIImagePickerControllerEditedImage] as? UIImage {
profileImageView.image = pickedImage.circle
self.prepCompressedImage = UIImage.compressImage(pickedImage, compressRatio: 0.9)
base64StringOf_my_image = appUtility.base64StringOfImage(self.prepCompressedImage)
// self.viewWillAppear(false)
fireNotification.pickedImage = pickedImage
isDismissing = true
}else{}
imagePicker.delegate = nil
self.dismissViewControllerAnimated(true,completion: nil)
isDismissing = true
}
}
extension ProfileVC: UIPickerViewDelegate,UIPickerViewDataSource {
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
if university.tag == 0 {
return 1
}else {
return 1
}
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if university.tag == 0 {
return uniList.count
}
else {
return industryList.count
}
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if university.tag == 0 {
let uni = uniList[row]
return String(uni.uni_name)
}else {
let ind = industryList[row]
return String(ind.ind_name)
}
}
}
//MARK:- SearchVC
extension ProfileVC {
func loadUni() {
let userLoader = UserLoader()
let params = ["":""]
if PrepUtility.connectedToNetwork() {
userLoader.tryUniversity(params, successBlock: { (university) in
self.uniList = university!
}) { (error) in
if let err = error?.userInfo["NSLocalizedDescription"] {
appUtility.showAlert(err as! String, VC: self)
}else {
appUtility.showAlert("Something went wrong", VC: self)
}
}
}else {
appUtility.showNoNetworkAlert()
}
}
func loadIndustries() {
let userLoader = UserLoader()
if PrepUtility.connectedToNetwork() {
userLoader.tryIndustry(["":""], successBlock: { (industry) in
self.industryList = industry!
}) { (error) in
if let err = error?.userInfo["NSLocalizedDescription"] {
appUtility.showAlert(err as! String, VC: self)
}else {
appUtility.showAlert("Something went wrong", VC: self)
}
}
}else {
appUtility.showNoNetworkAlert()
}
}
}
答案 0 :(得分：0)
由于您未在viewWillLoad或类似方法中初始化您的用户界面，我会说您的问题来自您的设备，试图获得更多空间。
你可能已经没有内存了，而系统会杀死它（在你的情况下是你以前的控制器）。
当您关闭图像选择器时，您的控制器正在重新加载其视图（使用您的初始值）
答案 1 :(得分：0)
我个人会将标签的.text保存到先前声明的变量中（无论如何都需要它们），并且在viewDidAppear方法中将变量值分配给textField.Text，当视图第一次出现时显示为空，当您调用图像选择器时保存新值，然后当原始视图再次出现时，它将分配您之前保存的值。